Issued Patents 2020
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10816237 | Backdraft damper having damper blades with opposed movement linkage | Ron Chappell | 2020-10-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10816237 | Backdraft damper having damper blades with opposed movement linkage | Ron Chappell | 2020-10-27 |